conditional_names.rb

def conditional_names(*args)
  # puts params.is_a?(String)
  classes = []

  args.each do |arg|
    classes << arg if arg.is_a?(String)

    if arg.is_a?(Array)
      classes << conditional_names(*arg)
    end

    if arg.is_a?(Hash)
      arg.each do |key, value|
        classes << key if value
      end
    end
  end

  classes.reject(&:empty?).join(' ')
end

puts conditional_names('my-thing', {
  enabled: 1+1 == 2,
  disabled: 1+1 == 3
}, ['butts', 'dud', {foo: true, bar: false}])